I guess i strted with IK+. That was one ofthe rare games I understood and possessed.
Also within the very Amiga 1st games there was Turrican, Defender of the crown Firepower and Kick off. A bit later I was impressed by hostages and shadow of the beast. Back in the days I owned spread disks only (in my school class alone there were ~7 Amiga owners). Wow - that's longs years ago!
Still playing Turrican today (in the meanwhile I own a nice boxed original (incl. poster)).